Applications
• E-bike and EV 2-Wheeler • 80 Plus™ Platinum
chargers designs
• Power tool chargers • High-power adaptors
• PC • High-power LED lighting
• Printer • Industrial and appliance
• LCD TV • Generic PFC converter
• Video game consoles
Description
The HiperPFS™-3 devices incorporate a continuous conduction mode
(CCM) boost PFC controller, gate driver, ultra-low reverse recovery
(Qspeed™) diode and high-voltage power MOSFET in a single,
low-profile (GROUND pin connected) power package. HiperPFS-3
devices eliminate the PFC converter’s need for external current sense
resistors and the associated power loss, and use an innovative control
technique that adjusts the switching frequency over output load,
input line voltage, and even input line cycle.
This control technique maximizes efficiency over the entire load range
of the converter, particularly at light loads. Additionally, it significantly
minimizes the EMI filtering requirements due to its wide bandwidth
spread spectrum effect. The HiperPFS-3 uses advanced digital
techniques for line monitoring functions, line feed-forward scaling, and
power factor enhancement, while using analog techniques for the
core controller in order to maintain extremely low no-load power
consumption. The HiperPFS-3 also features an integrated non-linear
error amplifier for enhanced load transient response, a user programmable
Power Good (PG) signal as well as user selectable power limit
functionality. HiperPFS-3 includes Power Integrations’ standard set of
comprehensive protection features, such as integrated UV, OV,
brown-in/out, and hysteretic thermal shutdown. HiperPFS-3 also
provides cycle-by-cycle current limit and Safe Operating Area (SOA)
protection of the power MOSFET, power limiting of the output for
overload protection, and pin-to-pin short-circuit protection.
HiperPFS-3’s innovative variable frequency continuous conduction
mode operation (VF-CCM) minimizes switching losses by maintaining
a low average switching frequency, while modulating the switching
frequency in order to suppress EMI, the traditional challenge with
continuous conduction mode solutions. Systems using HiperPFS-3
typically reduce the total X and Y capacitance requirements of the
converter, the inductance of both the boost choke and EMI noise
suppression chokes, thereby reducing overall system size and cost.
Additionally, HiperPFS-3 devices dramatically reduce component count
and board footprint while simplifying system design and enhancing
reliability, when compared with designs that use discrete MOSFETs
and controllers. The innovative variable frequency, continuous
conduction mode controller enables the HiperPFS-3 to realize all of
the benefits of continuous conduction mode operation while leveraging
low-cost, small, simple EMI filters.
Many regions mandate high power factor for many electronic
products with high power requirements. These rules are combined
with numerous application-specific standards that require high power
supply efficiency across the entire load range, from full load to as low
as 10% load. High efficiency at light load is a challenge for traditional
PFC solutions in which fixed MOSFET switching frequencies cause
fixed switching losses on each cycle, even at light loads. In addition
to featuring relatively flat efficiency across the load range, HiperPFS-3
also enables high power factor of >0.92 at 20% load. HiperPFS-3
simplifies compliance with new and emerging energy-efficiency
standards over a broad market space in applications such as PCs, LCD
TVs, notebooks, appliances, pumps, motors, fans, printers and LED
lighting.
HiperPFS-3’s advanced power packaging technology and high efficiency
simplify the complexity of mounting the IC and thermal management,
while providing very high power capabilities in a single compact
package; these devices are suitable for PFC applications from 75 W to
900 W.